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本文用X射线粉末法和金相实验测定了La≤32.2wt％(La≤16.7at％)成份区域内La-Co-Ni三元系相图的室温截面,它包含有四个单相区:α,β,LaCo_(13)和LaCo_(5x)Ni_(5-4x);五个两相区:α+β,α+LaCo_(13),β+LaCo_(13),β+LaCo_(5x)Ni_(5-5x)和LaCo_(13)+LaCo_5xNi_(5-5x)两个三相区:α+β+LaCo_(13)和β+LaCo_(13)+LaCo_(5x)Ni(5-5x),在此成份区域内没有发现新相。 X射线分析表明,La在β相中最大固溶度大约是9wt％。
In this paper, the room-temperature cross-section of the La-Co-Ni ternary phase diagram in La≤32.2wt% (La≤16.7at%) is determined by X-ray powder method and metallographic experiment. It contains four single- (13), LaCo_ (13) and LaCo_ (5x) Ni_ (5_4x); five two-phase regions: α + β, α + LaCo_ The two three-phase regions of Ni_ (5-5x) and LaCo_ (13) + LaCo_5xNi_ (5-5x) are: α + β + LaCo 13 and β + LaCo 13 + LaCo 5x Ni (5-5x) No new phase was found in this component area. X-ray analysis shows that the maximum solubility of La in the β phase is about 9 wt%.